摘要
Magnetotransport properties of modulation-doped AlxGa 1-xN/GaN heterostructures were studied at low temperatures and high magnetic fields. The strong Shubnikov-de Mass oscillations with the double periodicity is clearly observed, indicating the two-dimensional electron gas (2DEG) occupation of the double subbands in the triangular quantum well at the heterointerfaces. It is determined that the 2DEG occupation of the double subbands occurs when the 2DEG sheet concentration reaches 9.0 × 10 12cm-2, and the energy separation between the first and the second subbands is 75 meV. The quantum scattering time related to the first subband is determined to be 8.4 × 10-14 s. The mobilities of the 2DEG in the first and the second subbands, magnetointersubband scattering oscillations of the 2DEG, and the spin splitting of the 2DEG have also been studied.
| 源语言 | 英语 |
|---|---|
| 主期刊名 | Extended Abstracts of the Fourth International Workshop on Junction Technology, IWJT 2004 |
| 编辑 | X.P. Qu, G.P. Ru, B.Z. Li, B. Mizuno, H. Iwai |
| 出版商 | Institute of Electrical and Electronics Engineers Inc. |
| 页 | 166-170 |
| 页数 | 5 |
| 卷 | 4 |
| ISBN(印刷版) | 7309039157 |
| 出版状态 | 已出版 - 2004 |
| 已对外发布 | 是 |
| 活动 | Extended Abstracts of the Fourth International Workshop on Junction Technology, IWJT 2004 - Shanghai, 中国 期限: 15 3月 2004 → 16 3月 2004 |
会议
| 会议 | Extended Abstracts of the Fourth International Workshop on Junction Technology, IWJT 2004 |
|---|---|
| 国家/地区 | 中国 |
| 市 | Shanghai |
| 时期 | 15/03/04 → 16/03/04 |
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